DOUGLAS SMELTER, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(022669) DOUGLAS SMELTER
From Year=1903 To Year=1973
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	605	448	331	139	30	0	0	0	1	79	361	581	2575
60	450	308	190	53	7	0	0	0	0	26	218	426	1679
57	359	228	122	26	3	0	0	0	0	12	145	335	1231
55	299	180	87	15	1	0	0	0	0	7	105	275	970
50	166	83	30	3	0	0	0	0	0	2	40	143	467

Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. This is done for each day of the month and summed.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu